Bandwidth broadening induced by ionic interactions in polymer stabilized cholesteric liquid crystals

被引：74

作者：

Tondiglia, Vincent P. ^{[1
,2
]}

Natarajan, Lalgudi V. ^{[1
,2
]}

Bailey, Christopher A. ^{[1
,2
]}

McConney, Michael E. ^{[1
]}

Lee, Kyung Min ^{[1
,3
]}

Bunning, Timothy J. ^{[1
]}

Zola, Rafael ^{[4
]}

Nemati, Hossein ^{[4
]}

Yang, Deng-Ke ^{[4
]}

White, Timothy J. ^{[1
]}

机构：

[1] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[2] Leidos, Dayton, OH 45431 USA

[3] Azimuth Corp, Dayton, OH 45432 USA

[4] Kent State Univ, Kent, OH 44242 USA

来源：

OPTICAL MATERIALS EXPRESS | 2014年 / 4卷 / 07期

关键词：

SWITCHABLE MIRRORS; PITCH;

D O I：

10.1364/OME.4.001465

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cholesteric liquid crystals (CLCs) are selectively reflective materials that can exhibit a number of dynamic optical responses. We recently reported on electrically-induced, seven-fold increase in bandwidth in polymer stabilized CLCs (PSCLCs) subjected to DC electric fields. Here, the underlying mechanism of the electrically-controllable bandwidth broadening in PSCLCs is isolated by employing a variety of electro-optic experiments. We conclude that the mechanism is ionic charge trapping by the polymer network which subjects the material system to pitch expansion near the positive electrode and pitch compression near the negative electrode resulting in approximately linear pitch variation throughout the cell thickness. (C) 2014 Optical Society of America

引用

页码：1465 / 1472

页数：8

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